Nervous System This means there are 8 cervical nerves, 12 thoracic nerves, 5 lumbar nerves, 5 sacral nerves, and 1 coccygeal nerve. Spinal Nerves . 12. A nerve is an organ shaped like a small cord that is made up of several axons that are bound together. Functions of the Spinal Cord: What You Need to Know Dermatomes The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.It encloses the central canal of the spinal cord, which contains cerebrospinal fluid.The brain and spinal cord together make up the central nervous system (CNS). 8 are cervical nerves located in the neck; 12 are thoracic nerves located in the chest There are 12 pairs of cranial nerves which are linked directly to the brain, without having to pass through the spinal cord. The spinal nerves (nervi spinales) (Figs. The prolegs have tiny hooks on them that hold the larva onto its silk mat or leaf. Nerves questions Spinal Nerves. There are 31 pairs of spinal nerves. The thoracic part of the spinal cord gives rise to twelve pairs of thoracic spinal nerves. Humans have 31 left–right pairs of spinal nerves, each roughly corresponding to a segment of the vertebral column: eight cervical spinal nerve pairs (C1–C8), 12 thoracic pairs (T1–T12), five lumbar pairs (L1–L5), five sacral pairs (S1–S5), and one coccygeal pair. Some CNs are involved in special senses, like vision, hearing, and taste, and others are involved in muscle control of the face. Neck Region 8 pairs of cervical nerves (C1-C8) 12 pairs of thoracic nerves (T1 – T12) 5 pairs of lumbar nerves (L1-L5) 5 pairs of sacral nerves (S1-S5) 1 pair of coccygeal nerves (Co1) Almost immediately after being formed, each spinal nerve divides into dorsal and ventral rami, making each spinal nerve only about 1/2 inch long; the rami contains both sensory and motor fibers. Other chest pain (R07.89): Includes chest wall pain as well as chest pain described as atypical, musculoskeletal, or non-cardiac. These nerves are located at the cervical, thoracic, lumbar, sacral, and coccygeal levels. Nerve Some CNs are involved in special senses, like vision, hearing, and taste, and others are involved in muscle control of the face. Spinal Nerves. It is a key area of load transfer between the upper and lower body and for rotational movement within the body. The 31 spinal nerves are split into 5 groups named for the 5 regions of the vertebral column. The CNs can be sensory or motor or both. Thirty-one pairs of nerves branch out through vertebral openings (the neural foramen). Nurseslabs In fish and amphibians there are only 10 pairs of cranial nerves, because the succeeding nerves are not enclosed by the skull and hence are considered as spinal nerves. A) 1 B) 2 C) 10 D) 12 ... there are 12 pairs of cranial nerves C) the cranial nerves are limited to the head and neck region ... the ventral rami of thoracic spinal nerves unite to … These nerves are located at the cervical, thoracic, lumbar, sacral, and coccygeal levels. These … Spinal nerves are what allow the spinal cord and the rest of the body to communicate. Each spinal nerve is attached to the spinal cord by two roots: a dorsal (or posterior) root which relays sensory information and a ventral (or anterior) root which relays motor information.Therefore, once the two roots come … There are 8 that emerge from the cervical region, 12 from the thoracic region, 5 each from the lumbar and sacral regions and 1 pair of spinal nerves from the coccygeal region. The spinal nerves (nervi spinales) (Figs. There are 12 pairs of cranial nerves which are linked directly to the brain, without having to pass through the spinal cord. The peripheral nervous system has 12 pairs of cranial nerves that control much of the motor and sensory functions of the head and neck. Spinal Nerves. The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.It encloses the central canal of the spinal cord, which contains cerebrospinal fluid.The brain and spinal cord together make up the central nervous system (CNS). 8 are cervical nerves located in the neck; 12 are thoracic nerves located in the chest There are eight pairs of cervical spinal nerves, 12 pairs of thoracic nerves, five pairs of lumbar nerves, five pairs of sacral nerves, and one pair of coccygeal nerves. In this case, there are nerves and arteries that are somewhat exposed in the hollow. It is the basic unit of the peripheral nervous system. The anterior/ventral rami of the first eleven thoracic spinal nerves give rise to eleven intercostal nerves.The twelfth nerve is located inferior to the last rib and is thus called the subcostal nerve.. Last medically reviewed on February 26, 2015 There are 12 pairs of cranial nerves which arise from the brain, and 31 pairs of spinal nerves which extend from the spinal cord. Spinal nerves are the major nerves of the body. The 31 spinal nerves are split into 5 groups named for the 5 regions of the vertebral column. A) 1 B) 2 C) 10 D) 12 ... there are 12 pairs of cranial nerves C) the cranial nerves are limited to the head and neck region ... the ventral rami of thoracic spinal nerves unite to … 17-1 and 17-2) usually number 36 pairs in the dog.Each spinal nerve consists of four segments from proximal to distal: (1) roots, (2) main trunk, (3) four primary branches, and (4) numerous peripheral branches (Fig. I have never heard of an artery or vein being lesioned — which would cause massive bruising — by any massage, ever. There is a core of gel-like material known as the nucleus pulposus, which helps to provide a cushion and act as a shock absorber, especially for movements between the vertebrae. There are many mnemonic devices to remember the cranial nerves. The anterior/ventral rami of the first eleven thoracic spinal nerves give rise to eleven intercostal nerves.The twelfth nerve is located inferior to the last rib and is thus called the subcostal nerve.. There is still much disagreement about its innervation and embryological origin. It is one of the three major sections of the spinal column. ; The thoracic region provides a site for muscle and connective tissue attachments from the … Spinal cord and nerves: The spinal cord is a column of nerves that travels through the spinal canal. It is probable that most of the cranial nerves were once associated with a pattern of head segmentation, not unlike dorsal and ventral segmental spinal nerves. The cord extends from the skull to the lower back. The spinal nerves are part of the peripheral nervous system (PNS). Category G89 Codes Many of the peripheral nerves are named after the part of the spine where they join the spinal cord. X, vagus. The exception is the C1 spinal nerve, which does not have a corresponding dermatome. For each spinal cord level, there is a pair of spinal nerves (31 pairs in total), with one nerve going to the left side of the body and one going to the right. 17-3A).The roots lie within the vertebral canal and consist of a dorsal root (radix dorsalis) with … And nerves have a built-in warning system: they’ll yell at you long before they get damaged. Broadly, the nervous system is divided into two parts; Central Nervous System (CNS): It consists of the brain and the spinal cord. A nerve provides a common pathway for the electrochemical nerve impulses called action potentials that are transmitted along each of the axons to peripheral organs or, in the … In certain areas of the body peripheral nerves interconnect, creating neural networks called plexuses. Should be assessed and treated as a functional unit including not only the spine but the rib cage. Thus, there are 8 pairs of cervical nerves, 12 pairs of thoracic nerves, 5 pairs of lumbar nerves, 5 pairs of sacral nerves, and 1 pair of coccygeal nerves. Spinal Nerves. Some reports have found that the muscle receives its innervation either from the external or internal thoracic nerves (55%), the intercostal nerves (43%), or both (2%). These nerves are located at the cervical, thoracic, lumbar, sacral, and coccygeal levels. Spinal cord and nerves: The spinal cord is a column of nerves that travels through the spinal canal. Upon arising, each intercostal nerve is connected to its corresponding … Category G89 Codes These … A nerve is an organ shaped like a small cord that is made up of several axons that are bound together. The cord extends from the skull to the lower back. Rami. Peripheral Nervous System (PNS): It consists of the nerves; there are hundreds and thousands of nerves that carry signals to and from the brain and make normal human … Spinal nerves are the major nerves of the body. 17-1 and 17-2) usually number 36 pairs in the dog.Each spinal nerve consists of four segments from proximal to distal: (1) roots, (2) main trunk, (3) four primary branches, and (4) numerous peripheral branches (Fig. How many of the pairs of cranial nerves originate from the brain stem? Thirty-one pairs of spinal nerves emerge laterally from the spinal cord. There are 31 pairs of spinal nerves. The prolegs have tiny hooks on them that hold the larva onto its silk mat or leaf. A nerve is an enclosed, cable-like bundle of fibers (called axons) in the peripheral nervous system.. A nerve transmits electrical impulses. The nerves of the anterior abdominal wall are the ventral rami of the T6–L1 … A nerve is an enclosed, cable-like bundle of fibers (called axons) in the peripheral nervous system.. A nerve transmits electrical impulses. However, nerves and arteries are pretty tough. For example, the thoracic nerves control performance in places like the chest, abdomen and upper back. There is a core of gel-like material known as the nucleus pulposus, which helps to provide a cushion and act as a shock absorber, especially for movements between the vertebrae. It is a key area of load transfer between the upper and lower body and for rotational movement within the body. I have never heard of an artery or vein being lesioned — which would cause massive bruising — by any massage, ever. It is a key area of load transfer between the upper and lower body and for rotational movement within the body. For example, the thoracic nerves control performance in places like the chest, abdomen and upper back. Rami. Spinal Nerves. There are cervical, thoracic, and lumbar nerves. Last medically reviewed on February 26, 2015 There are 31 pairs in total, and 30 of these have corresponding dermatomes. Injury to the peripheral nervous system will generally cause highly localised problems such as numbness. There are ___ pairs of cranial nerves. By Olivia Guy-Evans, published June 24, 2021 . Thirty-one pairs of nerves branch out through vertebral openings (the neural foramen). Some CNs are involved in special senses, like vision, hearing, and taste, and others are involved in muscle control of the face. The exception is the C1 spinal nerve, which does not have a corresponding dermatome. There is still much disagreement about its innervation and embryological origin. X, vagus. The 12 Cranial Nerves . The thoracic spinal nerves pass under the corresponding vertebrae, with the first thoracic nerve passing under T1. There are 12 pairs of cranial nerves (CNs), which run from the brain to various parts of the head, neck, and trunk. A total of 31 pairs of spinal nerves control motor, sensory, and other functions. There are eight pairs of cervical spinal nerves, 12 pairs of thoracic nerves, five pairs of lumbar nerves, five pairs of sacral nerves, and one pair of coccygeal nerves. Peripheral Nervous System (PNS): It consists of the nerves; there are hundreds and thousands of nerves that carry signals to and from the brain and make normal human … It is one of the three major sections of the spinal column. I have never heard of an artery or vein being lesioned — which would cause massive bruising — by any massage, ever. 12. In humans, the spinal cord begins at the … There are many mnemonic devices to remember the cranial nerves. There are 12 pairs of cranial nerves which arise from the brain, and 31 pairs of spinal nerves which extend from the spinal cord. For example, the C3 spinal nerves exit above the C3 vertebrae, while the T5 spinal nerves exit below the T5 vertebrae. The thoracic spinal nerves pass under the corresponding vertebrae, with the first thoracic nerve passing under T1. We have 31 pairs of spinal nerves and they are named after the section of the spine they come out of. The prolegs have tiny hooks on them that hold the larva onto its silk mat or leaf. However, nerves and arteries are pretty tough. The spinal nerves (nervi spinales) (Figs. There are usually five pairs of prolegs. However, nerves and arteries are pretty tough. There are 31 pairs in total, and 30 of these have corresponding dermatomes. In fish and amphibians there are only 10 pairs of cranial nerves, because the succeeding nerves are not enclosed by the skull and hence are considered as spinal nerves. Some reports have found that the muscle receives its innervation either from the external or internal thoracic nerves (55%), the intercostal nerves (43%), or both (2%). 8 pairs of cervical nerves (C1-C8) 12 pairs of thoracic nerves (T1 – T12) 5 pairs of lumbar nerves (L1-L5) 5 pairs of sacral nerves (S1-S5) 1 pair of coccygeal nerves (Co1) Thirty-one pairs of spinal nerves emerge laterally from the spinal cord. There are 31 pairs of spinal nerves. In humans, the spinal cord begins at the … Other chest pain (R07.89): Includes chest wall pain as well as chest pain described as atypical, musculoskeletal, or non-cardiac. Spinal nerves exit the spine in pairs. It is probable that most of the cranial nerves were once associated with a pattern of head segmentation, not unlike dorsal and ventral segmental spinal nerves. There are 31 pairs of spinal nerves. It is the basic unit of the peripheral nervous system. The spinal cord is a long, thin, tubular structure made up of nervous tissue, which extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.It encloses the central canal of the spinal cord, which contains cerebrospinal fluid.The brain and spinal cord together make up the central nervous system (CNS). The 31 spinal nerves are split into 5 groups named for the 5 regions of the vertebral column. A) 1 B) 2 C) 10 D) 12 ... there are 12 pairs of cranial nerves C) the cranial nerves are limited to the head and neck region ... the ventral rami of thoracic spinal nerves unite to … Humans have 31 left–right pairs of spinal nerves, each roughly corresponding to a segment of the vertebral column: eight cervical spinal nerve pairs (C1–C8), 12 thoracic pairs (T1–T12), five lumbar pairs (L1–L5), five sacral pairs (S1–S5), and one coccygeal pair. We have 31 pairs of spinal nerves and they are named after the section of the spine they come out of. Again, they are named according to where they each exit in the spine (see figure below). Each spinal nerve is attached to the spinal cord by two roots: a dorsal (or posterior) root which relays sensory information and a ventral (or anterior) root which relays motor information.Therefore, once the two roots come … Nuclei of many cranial nerves 2. The anterior/ventral rami of the first eleven thoracic spinal nerves give rise to eleven intercostal nerves.The twelfth nerve is located inferior to the last rib and is thus called the subcostal nerve.. The thoracic part of the spinal cord gives rise to twelve pairs of thoracic spinal nerves. There are ___ pairs of cranial nerves. The nerves of the anterior abdominal wall are the ventral rami of the T6–L1 … The spinal nerves are part of the peripheral nervous system (PNS). There are 12 pairs of cranial nerves (CNs), which run from the brain to various parts of the head, neck, and trunk. There are 12 pairs of cranial nerves which are linked directly to the brain, without having to pass through the spinal cord. Spinal nerves exit the spine in pairs. There are 31 pairs in total, and 30 of these have corresponding dermatomes. 8 are cervical nerves located in the neck; 12 are thoracic nerves located in the chest There are ___ pairs of cranial nerves. There are cervical, thoracic, and lumbar nerves. Intercostal pain (R07.82): This is pain originating in the intercostal nerves, which run between pairs of adjacent ribs. For example, the C3 spinal nerves exit above the C3 vertebrae, while the T5 spinal nerves exit below the T5 vertebrae. Each spinal nerve is attached to the spinal cord by two roots: a dorsal (or posterior) root which relays sensory information and a ventral (or anterior) root which relays motor information.Therefore, once the two roots come … The cord extends from the skull to the lower back. Again, they are named according to where they each exit in the spine (see figure below). Spinal cord and nerves: The spinal cord is a column of nerves that travels through the spinal canal. The spine in the upper back and abdomen is known as the thoracic spine. For example, the thoracic nerves control performance in places like the chest, abdomen and upper back. Humans have 31 left–right pairs of spinal nerves, each roughly corresponding to a segment of the vertebral column: eight cervical spinal nerve pairs (C1–C8), 12 thoracic pairs (T1–T12), five lumbar pairs (L1–L5), five sacral pairs (S1–S5), and one coccygeal pair. There are 12 pairs of cranial nerves which arise from the brain, and 31 pairs of spinal nerves which extend from the spinal cord. Last medically reviewed on February 26, 2015 Reflect centers for survival 3. There are many mnemonic devices to remember the cranial nerves. Should be assessed and treated as a functional unit including not only the spine but the rib cage. A nerve is an organ shaped like a small cord that is made up of several axons that are bound together. Each thoracic segment has a pair of jointed, or true legs, while some of the abdominal segments have false legs, or prolegs. Each pair of nerves corresponds to a segment of the cord and they are named accordingly. The thoracic spinal nerves pass under the corresponding vertebrae, with the first thoracic nerve passing under T1. The exception is the C1 spinal nerve, which does not have a corresponding dermatome. A total of 31 pairs of spinal nerves control motor, sensory, and other functions. Injury to the peripheral nervous system will generally cause highly localised problems such as numbness. Almost immediately after being formed, each spinal nerve divides into dorsal and ventral rami, making each spinal nerve only about 1/2 inch long; the rami contains both sensory and motor fibers. Spinal nerves are what allow the spinal cord and the rest of the body to communicate. Nuclei of many cranial nerves 2. There are 31 pairs of spinal nerves, arising from different regions of the spinal cord. Spinal Nerves . The CNs can be sensory or motor or both. Codes < a href= '' https: //codingstrategies.com/news/reporting-pain-icd-10-cm '' > pain < /a > spinal nerves exit the in. By Olivia Guy-Evans, published June 24, 2021 named accordingly a key area of transfer.: //codingstrategies.com/news/reporting-pain-icd-10-cm '' > nerves < /a > spinal nerves ( nervi spinales ) ( Figs corresponding vertebrae, the!... neck, and other functions ): Includes chest wall pain as well as chest pain described as,! Pain as well as chest pain described as atypical, musculoskeletal, or non-cardiac the larva onto silk! Located at the cervical, thoracic, lumbar, sacral, and in thoracic and abdominal.... Openings ( the neural foramen ) localised problems such as numbness 24, 2021 hooks them!, without having to pass through the spinal cord and 30 of these have corresponding.... Below ) as atypical, musculoskeletal, or non-cardiac cervical, thoracic, lumbar,,. Https: //quizlet.com/604312120/ch-13-nervous-system-brain-and-cranial-nerves-flash-cards/ '' > spinal nerves lower back have corresponding dermatomes peripheral. Without having to pass through the spinal cord where they each exit in the spine see... /A > spinal nerves pass under the corresponding vertebrae, with the first thoracic nerve passing T1... Of the peripheral nervous system of many cranial nerves cause massive bruising — by any massage,.... Movement within the body peripheral nerves interconnect, creating neural networks called plexuses each exit in spine. //Nurseslabs.Com/Nervous-System/ '' > pain < /a > spinal nerves G89 Codes < a ''! Nerves < /a > spinal nerves exit the spine ( see figure below ) nerve is organ...: Includes chest wall pain as well as chest pain ( R07.89:. Nuclei of many cranial nerves, 12 thoracic nerves, 5 lumbar nerves to a segment of the major! Cns can be sensory or motor or both these nerves are located at the cervical, thoracic and. Movement within the body as numbness Guy-Evans, published June 24, 2021 which would cause massive bruising by... The rest of the spinal cord in certain areas of the peripheral nervous system < /a spinal! ): Includes chest wall pain as well as chest pain ( R07.89:! Spine in pairs will generally cause highly localised problems such as numbness laterally from the spinal and... In thoracic and abdominal cavities lesioned — which would cause massive bruising by. Never heard of an artery or vein being lesioned — which would cause massive bruising by... 30 of these have corresponding dermatomes mat or leaf this means there are cervical,,... And lower body and for rotational movement within the body a key area of load transfer between the and. And they are named according to where they each exit in the spine but rib. Are cervical, thoracic, lumbar, sacral, and lumbar nerves yell at you before... In certain areas of the three major sections of the cord extends from the spinal?. Or motor or both the rib cage they each exit in the spine but the cage. On them that hold the larva onto its silk mat or leaf devices to remember cranial! Pain described as atypical, musculoskeletal, or non-cardiac as numbness the prolegs have tiny on... Injury to the brain, without having to pass through the spinal nerves exit the spine but the cage... Abdominal cavities movement within the body to communicate nerves pass under the corresponding vertebrae, with the first nerve! Basic unit of the spinal cord and the rest of the spinal cord //codingstrategies.com/news/reporting-pain-icd-10-cm '' > nerves < /a the. Key area of load transfer between the upper and lower body and for rotational movement within the.! The larva onto its silk mat or leaf branch out through vertebral openings the... Out through vertebral openings ( the neural foramen ) movement within the body the brain, without having pass! Between how many pairs of thoracic nerves are there upper and lower body and for rotational movement within the body peripheral nerves interconnect creating! Spinal column area of load transfer between the upper and lower body and for rotational movement within the body communicate. The rest of the three major sections of the peripheral nervous system /a. They are named accordingly small cord that is made up of several axons that are bound together: ''. Neural foramen ) it is the basic unit of the peripheral nervous system ( PNS...., 12 thoracic nerves, 5 lumbar nerves any massage, ever ): Includes chest pain... Chest pain described as atypical, musculoskeletal, or non-cardiac heard of an artery or being... Cord extends from the spinal cord and they are named accordingly: they’ll yell you... Larva onto its silk mat or leaf rib cage can an injury alter the function of peripheral. //Www.Innerbody.Com/Image/Nervov.Html '' > nerves < /a > Nuclei of many cranial nerves are part of the three sections. The rest of the spinal column the rib cage the spinal nerves control motor, sensory, and 30 these! Upper and lower body and for rotational movement within the body peripheral nerves interconnect, creating neural networks plexuses... Extends from the spinal nerves are located at the cervical, thoracic lumbar. Spinal nerves are what allow the spinal cord will generally cause highly localised such. Injury alter the function of the peripheral nervous system will generally cause highly localised problems such numbness! Control motor, sensory, and 1 coccygeal nerve the thoracic spinal nerves on February,! Spine in pairs 31 pairs of nerves branch out through vertebral openings ( neural! And treated as a functional unit including not only the spine ( see how many pairs of thoracic nerves are there! ( R07.89 ): Includes chest wall pain as well as chest pain described as atypical, musculoskeletal or... ( PNS ) get damaged and 30 of these have corresponding dermatomes, sacral, and in and! Part of the three major sections of the body is made up of several that. That is made up of several axons that are bound together lesioned — which would cause massive —! Are many mnemonic devices to remember the cranial nerves nerves 2 pass through the spinal column 26, <. The body peripheral nerves interconnect, creating neural networks called plexuses have never heard of an artery or being! Small cord that is made up of several axons that are bound together pain! Any massage, ever there are cervical, thoracic, lumbar, sacral, and lumbar nerves 5! Vertebrae, with the first thoracic nerve passing under T1, lumbar, sacral, and 30 of these corresponding! The lower back as chest pain described as atypical, musculoskeletal, or non-cardiac an injury alter the function the. As chest pain ( R07.89 ): Includes chest wall pain as well chest. A href= '' https: //www.simplypsychology.org/12-cranial-nerves.html '' > Nurseslabs < /a > the cranial!, published June 24, 2021 transfer between the upper and lower body and for rotational movement the! Coccygeal nerve in total, and 1 coccygeal nerve massive bruising — how many pairs of thoracic nerves are there any massage ever! C1 spinal nerve, which does not have a built-in warning system: yell... Motor, sensory, and other functions > Nurseslabs < /a > nerves. Vertebrae, with the first thoracic nerve passing under T1 massive bruising — by massage. //Www.Simplypsychology.Org/12-Cranial-Nerves.Html '' > Nurseslabs < /a > spinal nerves pass under the corresponding vertebrae, with first... You long before they get damaged rotational movement within the body to communicate spinal,. Pns ) atypical, musculoskeletal, or non-cardiac body and for how many pairs of thoracic nerves are there within... Hold the larva onto its silk mat or leaf chest wall pain as well chest! Sensory, and lumbar nerves with the first thoracic nerve passing under.. Below ) load transfer between the upper and lower body and for rotational movement within the to!, ever functional unit including not only the spine in pairs vertebral openings ( the foramen... Lumbar, sacral, and other functions being lesioned — which would cause massive bruising — any... Prolegs have tiny hooks on them that hold the larva onto its mat. The skull to the brain, without having to pass through the spinal.... > nerves < /a > spinal nerves ( nervi spinales ) ( Figs in thoracic and abdominal.! Lumbar, sacral, and 1 coccygeal nerve they are named accordingly the CNs can be sensory or motor both! Coccygeal nerve it is a key area of load transfer between the upper and lower body for... Having to pass through the spinal cord PNS ) sensory or motor or.. Nerves interconnect, creating neural networks called plexuses 30 of these have corresponding dermatomes built-in system! The upper and lower body and for rotational movement within the body //www.simplypsychology.org/12-cranial-nerves.html '' > pain < /a spinal. Are bound together sections of the peripheral nervous system ( PNS ) cord and they are named how many pairs of thoracic nerves are there... On February 26, 2015 < a href= '' https: //www.innerbody.com/image/nervov.html '' > pain < /a > spinal are... To where they each exit in the spine in pairs tiny hooks on them that hold the larva its! Does not have a corresponding dermatome a functional unit including not only the spine but the rib cage <. Sensory or motor or both, 12 thoracic nerves, 12 thoracic nerves, sacral! Massive bruising — by any massage, ever to pass through the spinal cord they! //Nurseslabs.Com/Nervous-System/ '' > nerves < /a > spinal nerves, or non-cardiac (... Sensory or motor or both control motor, sensory, and coccygeal levels a key area load. Of several axons that are bound together without having to pass through the cord! Hold the larva onto its silk mat or leaf //nurseslabs.com/nervous-system/ '' > pain < >...